Unitary punch and die assembly

Details Unitary punch and die assembly Unitary punch and die assembly

1980-04-18

1981-10-06

Meister, J. M.

Cutting

With product handling means

Means to move, guide, or permit free fall or flight of product

83169, 83389, 83390, B21D 4500, B26D 700, B26F 100

Patent

active

042928699

ABSTRACT:
A unitary punch and die assembly wherein the stripper spring for the punch comprises a fluid cylinder which communicates with a gas reservoir formed integrally with the punch and die holder and which is adapted to be charged with gas to a predetermined pressure so as to obtain a desired stripping force on the punch. The hold down sleeve on the punch is preferably also actuated by a fluid spring to obtain a preselected clamping force on the stock being punched.

REFERENCES:
patent: 2716451 (1955-08-01), Taylor
patent: 2732898 (1956-01-01), Taylor

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